Softei & Microchip RN2903 LoRa Technology Mote

Win a Microchip RN2903 LoRa^® Technology Mote (DM164139) from Softei and if you don’t win, receive a 15% off voucher, plus free shipping for one of these boards.

The RN2903 LoRa Mote is a LoRaWAN™ Class A end-device based on the RN2903 LoRa modem. The RN2903 is a fully-certified 915 MHz module based on wireless LoRa technology. The RN2903 utilizes a unique spread spectrum modulation within the Sub-GHz band to enable long range, low power, and high network capacity. As a standalone battery-powered node, the Mote provides a convenient platform to quickly demonstrate the long-range capabilities of the modem, as well as to verify inter-operability when connecting to LoRaWAN v1.0 compliant gateways and infrastructure.

The Mote includes light and temperature sensors to generate data, which are transmitted either on a fixed schedule or initiated by a button-press. An LCD display provides feedback on connection status, sensor values and downlink data or acknowledgements. A standard USB interface is provided for connection to a host computer, providing a bridge to the UART interface of the RN2903 modem. As with all Microchip RN family of products, this enables rapid setup and control of the on-board LoRaWAN protocol stack using the high level ASCII command set.

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Highlights

Using high-precision architectures enables superior DC performance, regardless of operating conditions
Low noise and additional EMI filtering on the inputs provide additional protection in electrically noisy environments
Small packages, such as leadless DFNs, are ideal for space-constrained designs
A wide operating temperature range of –40°C to +125°C provides a robust solution even at extreme temperatures

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The MCP6N11 and MCP6V2x Wheatstone Bridge Reference Design demonstrates the performance of Microchip's MCP6N11 instrumentation amplifier (INA) and a traditional three op amp INA using Microchip's MCP6V26 and MCP6V27 auto-zeroed op amps. The input signal comes from an RTD temperature sensor in a Wheatstone bridge. Real world interference is added to the bridge's output, to provide realistic performance comparisons. Data is gathered and displayed on a PC, for ease of use. The USB PIC® microcontroller and included Graphical User Interface (GUI) provides the means to configure the board and collect sample data.

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